Asked: June 10, 20222022-06-10T18:44:42+00:00 2022-06-10T18:44:42+00:00

javascript – Difference in for loop using setTimeout var / let

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javascript – Difference in for loop using setTimeout var / let – Stack Overflow

Asked
today

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Can someone explain me the logic behind var and let in this situation?

for(let i=0; i<5;i++) {
    setTimeout(() => {
    console.log(i);
  }, 1000);
}

Prints 0 1 2 3 4

for(var i=0; i<5;i++) {
    setTimeout(() => {
    console.log(i);
  }, 1000);
}

Prints 5 5 5 5 5 5

asked 2 mins ago

squnk

320

lang-js

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